AUIRLZ44Z

Single FETs, MOSFETs Overview

The AUIRLZ44Z is an automotive-grade N-channel HEXFET power MOSFET manufactured by Infineon Technologies. It features a TO-220AB package with a maximum drain-source voltage of 55V and a continuous drain current of 51A at 25°C case temperature. The device exhibits a typical on-resistance of 11mΩ and a maximum of 13.5mΩ at VGS=10V. Key electrical parameters include a gate threshold voltage range of 1.0V to 3.0V, total gate charge of 24nC typ., and a junction-to-case thermal resistance of 1.87°C/W. It supports operation up to 175°C and includes repetitive avalanche capability.

Single FETs, MOSFETs Feature Summary

• Automotive qualified per AEC-Q101 standards for high reliability in vehicle environments
• Advanced process technology enables ultra-low on-resistance per silicon area
• Capable of handling repetitive avalanche energy up to maximum junction temperature
• Logic level gate drive compatibility allows direct control from standard microcontrollers

Single FETs, MOSFETs Applications

• Automotive power distribution systems
• Motor control circuits in vehicles
• High-side and low-side switching applications
• DC-DC converter implementations

Single FETs, MOSFETs Procurement Notes

Verify the specific ordering suffix matches the required packaging format, as the base part number corresponds to tube packaging. Confirm that the component meets the exact AEC-Q101 qualification requirements for your target automotive application. Ensure that the TO-220AB through-hole package aligns with your board design constraints. Cross-reference the datasheet revision to confirm all electrical characteristics remain consistent with your design specifications.

Single FETs, MOSFETs Selection Notes

Select this component when designing for automotive environments requiring robust performance under high thermal stress. The logic-level gate drive simplifies driver circuit design compared to standard threshold devices. Consider the thermal resistance and safe operating area curves to ensure adequate heat sinking for continuous high-current operations. Verify that the 55V rating provides sufficient margin for your specific system voltage levels.

Single FETs, MOSFETs Part Context

This device belongs to the HEXFET family of power MOSFETs, known for their efficiency and switching speed. The 'AU' prefix indicates automotive qualification, distinguishing it from industrial or consumer grade variants. It utilizes planar technology to achieve low on-resistance while maintaining fast switching characteristics suitable for modern power electronics.

Single FETs, MOSFETs Replacement Considerations

Check for updated Infineon part numbers within the same HEXFET series that may offer improved thermal performance or different packaging options. Verify pinout compatibility if substituting with other 55V N-channel MOSFETs in TO-220 packages. Ensure any replacement maintains the same AEC-Q101 qualification status if used in certified automotive systems.